# Copyright 2024 Bytedance Ltd. and/or its affiliates
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import os
import math
import pkg_resources
from pkg_resources import DistributionNotFound
from packaging.version import parse as parse_version
from .utils.device import is_npu_available
version_folder = os.path.dirname(os.path.join(os.path.abspath(__file__)))

with open(os.path.join(version_folder, 'version/version')) as f:
    __version__ = f.read().strip()

from .protocol import DataProto

from .utils.logging_utils import set_basic_config
import logging
if is_npu_available:
    from .utils import npu_patch

set_basic_config(level=logging.WARNING)

from . import single_controller

__all__ = ['DataProto', "__version__"]

package_name = 'transformers'
required_version_spec = '4.51.0'
try:
    installed_version = pkg_resources.get_distribution(package_name).version
    installed = parse_version(installed_version)
    required = parse_version(required_version_spec)

    if not installed >= required:
        raise ValueError(f"{package_name} version required >= {required_version_spec}, current version is {installed}.")
except DistributionNotFound as e:
    raise ImportError(
        f"{package_name} not installed。please run pip install {package_name}=={required_version_spec}") from e

if os.getenv('VERL_USE_MODELSCOPE', 'False').lower() == 'true':
    import importlib
    if importlib.util.find_spec("modelscope") is None:
        raise ImportError(f'You are using the modelscope hub, please install modelscope by `pip install modelscope -U`')
    # Patch hub to download models from modelscope to speed up.
    from modelscope.utils.hf_util import patch_hub
    patch_hub()
